scholarly journals Isolation and characterization of Bacillus subtilis spores that are superdormant for germination with dodecylamine or Ca2+ -dipicolinic acid

2013 ◽  
Vol 114 (4) ◽  
pp. 1109-1119 ◽  
Author(s):  
A. Perez-Valdespino ◽  
S. Ghosh ◽  
E.P. Cammett ◽  
L. Kong ◽  
Y.-q. Li ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Dipicolinic Acid ◽  
Isolation And Characterization

scholarly journals Isolation and Characterization of Superdormant Spores of Bacillus Species

2009 ◽  
Vol 191 (6) ◽  
pp. 1787-1797 ◽  
Author(s):  
Sonali Ghosh ◽  
Peter Setlow
Keyword(s):  
Bacillus Subtilis ◽  
Bacillus Megaterium ◽  
Dipicolinic Acid ◽  
Nutrient Concentrations ◽  
Bacillus Species ◽  
Nutrient Levels ◽  
Isolation And Characterization ◽  
High Nutrient ◽  
Heat Activation

ABSTRACT Superdormant spores of Bacillus subtilis and Bacillus megaterium were isolated in 4 to 12% yields following germination with high nutrient levels that activated one or two germinant receptors. These superdormant spores did not germinate with the initial nutrients or those that stimulated other germinant receptors, and the superdormant spores' defect was not genetic. The superdormant spores did, however, germinate with Ca2+-dipicolinic acid or dodecylamine. Although these superdormant spores did not germinate with high levels of nutrients that activated one or two nutrient germinant receptors, they germinated with nutrient mixtures that activated more receptors, and using high levels of nutrient mixtures activating more germinant receptors decreased superdormant spore yields. The use of moderate nutrient levels to isolate superdormant spores increased their yields; the resultant spores germinated poorly with the initial moderate nutrient concentrations, but they germinated well with high nutrient concentrations. These findings suggest that the levels of superdormant spores in populations depend on the germination conditions used, with fewer superdormant spores isolated when better germination conditions are used. These findings further suggest that superdormant spores require an increased signal for triggering spore germination compared to most spores in populations. One factor determining whether a spore is superdormant is its level of germinant receptors, since spore populations with higher levels of germinant receptors yielded lower levels of superdormant spores. A second important factor may be heat activation of spore populations, since yields of superdormant spores from non-heat-activated spore populations were higher than those from optimally activated spores.

Isolation and characterization of a halotolerant Bacillus subtilis BBK-1 which produces three kinds of lipopeptides: bacillomycin L, plipastatin, and surfactin

Extremophiles ◽  
2002 ◽  
Vol 6 (6) ◽  
pp. 499-506 ◽  
Author(s):  
Niran Roongsawang ◽  
Jiraporn Thaniyavarn ◽  
Suthep Thaniyavarn ◽  
Takayuki Kameyama ◽  
Mitsuru Haruki ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Isolation And Characterization ◽  
Bacillomycin L

Production, isolation and characterization of [Leu4]- and [Ile4]surfactins from Bacillus subtilis

1995 ◽  
Vol 2 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Jean-Marc Bonmatin ◽  
Henri Labb� ◽  
Isabelle Grangemard ◽  
Fran�oise Peypoux ◽  
R�gine Maget-Dana ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Isolation And Characterization

scholarly journals Isolation and Characterization of Inhibitors of the Essential Histidine Kinase, YycG in Bacillus subtilis and Staphylococcus aureus

2003 ◽  
Vol 56 (12) ◽  
pp. 1045-1052 ◽  
Author(s):  
TAKAFUMI WATANABE ◽  
YOSHIKI HASHIMOTO ◽  
KANEYOSHI YAMAMOTO ◽  
KIYO HIRAO ◽  
AKIRA ISHIHAMA ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Bacillus Subtilis ◽  
Histidine Kinase ◽  
Isolation And Characterization ◽  
And Staphylococcus Aureus

scholarly journals Isolation and characterization of the Bacillus subtilis sigma 28 factor.

1988 ◽  
Vol 170 (4) ◽  
pp. 1560-1567 ◽  
Author(s):  
J D Helmann ◽  
F R Masiarz ◽  
M J Chamberlin
Keyword(s):  
Bacillus Subtilis ◽  
Isolation And Characterization
Sign in / Sign up

Export Citation Format

Share Document